Elevator safety device.



J. REMJAS.

ELEVATOR SAFETY DEVICE.

APPLICATION FILED DEG.22, 1913.

Patented Jan. 12, 19 15.

3 SHEETS-SHEET 2.

NW A MN Emma rHE NORRIS PETERS co., PHOTO LITHQ. WASHINGTON. D, c,

J. REMJAS. ELEVATOR SAFETY DEVICE.

APPLIGATION FILED DEC. 22, 1913.

1,124,804. Patented Jan. 12, 1915.

3 SHEETS-SHEET 3,

JOHN REMJAS, OF LITTLE FALLS, NEW YORK.

ELEVATOR SAFETY DEVICE.

Specification of Letters Patent.

Patented Jan. 12, 19 15.

Application filed December 22, 1913. Serial No. 808,201.

To all whom it may concern:

Be it known that I, J OHN RnMJAs, a subject of the Emperor of AustriaJ-lungary, residing at Little Falls, in the county of Herkimer and State of New York, have invented certain new and useful Improvements in Elevator Safety Devices, of which the following is a specification.

This invention relates to certain new and useful improvements in elevator safety devices.

An object of the invention is to provide an elevator of the cable lift type with automatic'operating means that is made operative should the lift cable break.

A further object of the invention is to provide an elevator with automatic safety catches to arrest downward movement of the elevator should the cable break, and to employ in connection with the automatic means a manually controlled means for performing the same function, should it be necessary to stop the elevator at any desired point to repair the same or its lift cable.

The present invention is shown in connection with a cable lift elevator, but it can be employed with any other type, and the manually controlled means be utilized to arrest the movement of the elevator at any point.

With the above and other objects in view, which will appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of parts to be hereinafter more fully described and then claimed, ref erence being had to the accompanying drawings by like characters throughout the several views, and wherein Figure 1 is a side elevational view of an elevator embodying my invention. Fig. 2 is an enlarged top plan view of the same, partly in section. Fig. 3 is an enlarged side elevational view of a portion of my safety device. Fig. 4: is a cross-sectional view upon the line mx of Fig. 2. Fig. 5 is an enlarged side elevational view partly in section, illustrating the manner of holding the safety catch bolt in retracted position, and, Fig. 6 is a perspective View illustrating the cable connection.

Referring more specifically to the drawings, the reference numeral 10 indicates an elevator well and disposed at opposite sides of the well are T=shaped angle bars 11- ,which constitute guides for the elevator.

Arranged in the well 10 adjacent the angle bars 11, are the members 12 similar in construction to a ladder. Each side of the well is provided with one of these members 12 which are arranged upon opposite sides of the angle bars 11.

The elevator comprises the platform 13 and the side bars 14: and connecting the upper ends of the side bars 1 1 is a transverse bar 15. The bar 15 carries all of the operating mechanism for rendering the elevator inoperative or at rest at any desired point. The ends of the bar. 15 are forked as at 16 and constitute guides for the elevator, these guides or forked ends sliding over the angle bar 11. The lower face of the platform 13 carries a pair of forked arms 17 which are'secured thereto in any suitable manner and perform the same function as the forked ends 16 of the bar 15. Disposed centrally of the bar 15 is an eye-bolt 18 and connected to said eyebolt is the lift cable 19 passing over the sheave 20 suspended from the top of the elevator shaft as at 21. The cable 19 passing over the sheave 2O continues to a suitable winding drum which may be suitably driven and which it is deemed unnecessary to herein illustrate. The upper ends of the angle bars 11 are spaced a slight distance below the top of the well 10 and are connected by a bar 22 having an opening 23 arranged centrally thereof through which the cable 19 passes, this bar constituting a guide for said cable.

The bar 15 on opposite sides and adjacent the ends thereof is provided with a pair of spaced projections 2 1 constituting guides for the sliding bolt 25. This sliding bolt 25 is provided with a collar 26 and mounted on said bolt 25 between the collar and the innermost projection 24 is a compression coiled spring 27 which has a tendency to force the bolt 25 outwardly. The inner end of the bolt is connected as at 28 to the lever 29, said lever 29 being pivoted as at 30- to the'under face of the bar 15. A weighted trigger or lever is employed to hold the bolt 25 in retracted position. This lever des gnated 31 is provided upon its free end with an adjustable weight 32 and is pivoted to the depending ears 33 carried by the under face of the bar 15, while the other end of said lever is provided with the upstanding portion or arm 34 to be received in the notch or cut-away portion 35 formed in the underface of the bolt 25 The sliding bolts 25. are made operable by mechanism to be hereinafter described to project the same between the rungs of the ladder members 12 and to arrest movement of the elevator should the cable 19 become broken and to accomplish this purpose, the following mechanism is employed. A pair of vertical pins or rods 36 are carried by the upper face of the bar 15 and preferably disposed to one side of the center thereof and mounted on said rods is a block 37. An eyebolt 38 is carried by the block 37 and connected to said eye-bolt 38 is a cable 39 which extends upwardly through the opening 23 of the bar 22 and over the sheave 20. Connected to the cable 39 is a cable 40 which travels over the sheave 41 carried by the side of the bar 15 and is connected to a cable 42, the cable 42 continuing over a sheave 43 connected to the side of the bar 15, extending downwardly and having a connection as at 44 with one of the triggers 31. A cable 45 is connected to the cable 39 and passes over the sheave 46 carried by the opposite side of the, bar 15 and from a second sheave 4.7 carried by the same side of the board and then downwardly to have a similar connection 48 to the other of said triggers as the cable 42. The cable 45 continues in an upright direction and passes over the sheaves 49 and 50 and thence downwardly as at 51, passing through an eye-bolt 52 constituting a guide and provided at its lower end with a handle 53. The other end of the cable 42 is connected to the cable 45 as at 54, the cable 42 passing over the sheaves carried by the upper face of the bar 15.

The operation of the device is as follows: Should the cable 19 become broken and the elevator make a sudden descent, the sliding bolts 25 will be released from the triggers 31, moving in an outward direction and extending between the rungs of the ladder member 12. Toreleasc the, triggers 31 the cable 39, which during the usual operation the elevator is in an inoperative condition or loose, at this time becomes taut. The cable 39 in its operative condition will move the cable 40 upwardly over the sheaves 41 and 43 and the cable 45 upwardly over the sheaves 45 and 46' and during such opera tion will elevate the rear ends of the triggers 31 by having connection therewith as at 44 and 48. The ends of the triggers are then released from the cut-out portions of the sliding bolts 25, which operation will permit the springs 27 to exert themselves and force the bolts 25 outwardly. Should the cable 39 for any reason, refuse to operate, the cable 51 is gripped as at 53 and drawn in a downward direction and during such movement, the cable 45 passing over the sheave 49 and connected as at 48 to one of the triggers 31 will elevate said trigger while the cable 42 connected to the cable 45 as at 54 and passingover the sheaves 55 and 43 will elevate the other of said triggers and release the same from the sliding bolts 25.

It is readily seen from the above description and operation that a safety device in connection with elevators is provided which may be either automatically or manually controlled, and while I-have shown the preferred embodiment of my invention, I do not wish to confine myself thereto, as various forms, modifications and arrangement of the parts may be had without departing from the spirit and scope of the invention as claimed.

What I claim as new and desire to secure by Letters Patent is The combination with an elevator shaft provided with vertical guides, of a cage and its suspending cable, a cross bar carried by said cage, oppositely disposed catch devices within the shaft, spring-controlled bolts slidably supported on said cross-bar and notched on their under side, weighted levers having projections to engage the notches of the bolts, manually operated means for operating said bolts, a bolt-operating cable between said cross-bar and the pulley of the suspending cable. for releasing said bolts in case of breakage of said suspending cable, and means for maintaining slack in said bolt operating cable comprising a sliding block, vertical rods projecting from said crossbar and extending through said block, and flexible connections between the block and said bolt operating table.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN REMJAs.

l/Vitnesses DANIEL KovAo, STEFAN BABJOR.

Copies of thisv patent may be obtained for five cents each, by addressing the Commissioner of Patents,

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